MDL-29029 move health center to admin tools

MDL-29029 move health center to admin tools

AMOS BEGIN
 MOV [healthcenter,moodle],[pluginname,tool_health]
 MOV [healthnoproblemsfound,moodle],[healthnoproblemsfound,tool_health]
 MOV [healthproblemsdetected,moodle],[healthproblemsdetected,tool_health]
 MOV [healthproblemsolution,moodle],[healthproblemsolution,tool_health]
 MOV [healthreturntomain,moodle],[healthreturntomain,tool_health]
 MOV [healthsolution,moodle],[healthsolution,tool_health]
AMOS END